Summary of the invention
Based on this, it is necessary to provide the optical film layer and display dress of a kind of big visual angle colour cast that can improve display panelIt sets.
In order to achieve the object of the present invention, the present invention adopts the following technical scheme:
A kind of optical film layer, comprising:
Uniaxial anisotropic optical layer is formed with multiple grooves on the side of the uniaxial anisotropic optical layer；
Isotropism optical layer, including plate-like portion and the multiple and groove type being fitted on the plate-like portion sideThe refractive index of the bulge-structure that shape, size match, the isotropism optical layer is less than the uniaxial anisotropic opticalThe ordinary refraction index of layer, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is in incident lightIn wave-length coverage；
First grating layer is layered in side of the isotropism optical layer far from the uniaxial anisotropic optical layerOn；Or it is embedded on side of the isotropism optical layer far from the uniaxial anisotropic optical layer.
The ordinary refraction index of the uniaxial anisotropic optical layer is 1.0-2.5 in one of the embodiments,；And/or the refractive index of the isotropism optical layer is 1.0-2.5.
The ordinary refraction index of the uniaxial anisotropic optical layer is with described respectively to same in one of the embodiments,Property optical layer specific refractivity be 0.01-2.
In one of the embodiments, on the arragement direction of multiple bulge-structures, the width of the bulge-structureLess than or equal to 1000nm.
The bulge-structure is tetragonous rod structure in one of the embodiments, and described in the one side fitting of quadrangularPlate-like portion extends, and the extending direction of multiple bulge-structures is parallel, adjacent two bulge-structure intervals setting.
The bulge-structure is tetragonous rod structure in one of the embodiments, and multiple bulge-structures are in Two-Dimensional MomentBattle array array arrangement, adjacent two bulge-structure intervals setting.
The material of the uniaxial anisotropic optical layer includes smectic material in one of the embodiments,Material.
It is each far from the uniaxial to be layered in isotropism optical layer for first grating layer in one of the embodiments,On the side of anisotropy optical layer, first grating layer includes transparent substrate and be formed on the transparent substrate multipleThe metal layer of shape, multiple metal interlevels every and be arranged in parallel；Or
First grating layer is embedded in the isotropism optical layer far from the uniaxial anisotropic optical layerOn side, first grating layer includes the metal layer for the multiple bar shapeds being formed on isotropism optical layer side, moreA metal interlevel every and be arranged in parallel.
In one of the embodiments, the width of the metal layer be 50nm-150nm, the metal layer with a thickness of100nm-200nm, the spacing of the two neighboring metal layer are 100nm-200nm.
A kind of optical film layer, comprising:
Uniaxial anisotropic optical layer is formed with multiple grooves on the side of the uniaxial anisotropic optical layer；
Isotropism optical layer, including plate-like portion and the multiple and groove type being fitted on the plate-like portion sideThe refractive index of the bulge-structure that shape, size match, the isotropism optical layer is less than the uniaxial anisotropic opticalThe ordinary refraction index of layer, on the arragement direction of multiple bulge-structures, the width of the bulge-structure is less than or equal to1000nm；
First grating layer is layered in side of the isotropism optical layer far from the uniaxial anisotropic optical layerOn；Or it is embedded on side of the isotropism optical layer far from the uniaxial anisotropic optical layer；
Wherein, the ordinary refraction index of the uniaxial anisotropic optical layer is 1.0-2.5, the isotropism opticsThe refractive index of layer is 1.0-2.5, the ordinary refraction index of the uniaxial anisotropic optical layer and the isotropism opticsThe specific refractivity of layer is 0.01-2.
In order to achieve the object of the present invention, the present invention adopts the following technical scheme:
A kind of display device, comprising:
Backlight module, for providing incident light；
Display panel is placed in above the backlight module, for receiving the incident light and showing picture；
Wherein, the display panel includes:
Optical film layer as described above；
The optical film layer is set far from the first substrate on the uniaxial anisotropic optical layer side；
The second substrate being oppositely arranged with the first substrate；
Display layer between the first substrate and the second substrate is set；
The second grating layer between the display layer and the second substrate is set；
Photoresist layer between second grating layer and the second substrate is set, or is arranged in the first substratePhotoresist layer between the display layer.
The photoresist layer is arranged between second grating layer and the second substrate in one of the embodiments,The display panel further include:
Compensation film layer between the display layer and second grating layer is set；And/or
Compensation film layer between the display layer and the first substrate is set.
The photoresist layer is arranged between the first substrate and the display layer in one of the embodiments,；It is describedDisplay panel further include:
Compensation film layer between the display layer and second grating layer is set；And/or
Compensation film layer between the photoresist layer and the first substrate is set.
Above-mentioned optical film layer, including uniaxial anisotropic optical layer, isotropism optical layer and the first grating layer, respectively toThe refractive index of same sex optical layer is less than the ordinary refraction index of uniaxial anisotropic optical layer, and the width of bulge-structure is enteringIt penetrates in the wave-length coverage of light, light will generate diffraction when passing through from the interface of groove and bulge-structure, so that positive visual angle lightType energy distributes big visual angle, improves visual angle colour cast；First grating layer is layered in isotropism optical layer far from uniaxial respectively to differentOn the side of property optical layer, or it is embedded on side of the isotropism optical layer far from uniaxial anisotropic optical layer, it canNatural light is set to become polarised light, and the polarizer that alternate thicknesses are thicker.Above-mentioned optical film layer can not only improve display surface as a result,The big visual angle colour cast of plate, but also display panel thinner thickness can be made.
Above-mentioned display device, the backlight module including the high backlight light type output of directive property, and there is big visual angle and colorThe display panel improved partially, being thinned.Wherein, on the one hand display panel passes through the setting of optical film layer, can be by positive visual angleLight type energy be assigned to big visual angle, solve the problems, such as the big visual angle colour cast of display panel；On the other hand, due to the first grating layer andSecond grating layer can make natural light become polarised light, and the polarizer that alternate thicknesses are thicker, and make the thickness of display panelIt is relatively thin, so that display device volume is frivolous, display colour cast rate is low and has high display efficiency, it can be improved the experience of userDegree.
Specific embodiment
To facilitate the understanding of the present invention, a more comprehensive description of the invention is given in the following sections with reference to the relevant attached drawings.In attached drawingGive preferred embodiment of the invention.But the invention can be realized in many different forms, however it is not limited to hereinDescribed embodiment.On the contrary, purpose of providing these embodiments is keeps the understanding to the disclosure more saturatingIt is thorough comprehensive.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the inventionThe normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description toolBody embodiment purpose, it is not intended that in limitation the present invention.
Referring to Fig. 1 and Fig. 2, Fig. 1 and Fig. 2 is the structural schematic diagram of the optical film layer in the present embodiment.
In the present embodiment, optical film layer 210 includes uniaxial anisotropic optical layer 211, isotropism optical layer 212And first grating layer 213.Wherein, the first grating layer 213 is layered in isotropism optical layer 212 far from uniaxial anisotropy(referring to Fig. 1) on the side of optical layer 211；Or isotropism optical layer 212 is embedded in far from uniaxial anisotropic optical layerOn 211 side (referring to fig. 2).
Wherein, multiple grooves, uniaxial anisotropic optical layer are formed on 211 side of uniaxial anisotropic optical layer211 have optical anisotropy, have very optical index ne1With ordinary refraction index no1.Extraordinary ray refractive index ne1For listThe equivalent refractive index parallel with optical axis when polarization of light direction of optical axis anisotropic optical layer 211；Ordinary refraction index no1For listOptical axis anisotropic optical layer 211 when the polarization of light direction equivalent refractive index vertical with optical axis, when light pass through uniaxial respectively toAnisotropic optical layer 211 can generate birefringent phenomenon.
In one embodiment, ne1< no1, i.e. uniaxial anisotropic optical layer 211 is negative uniaxial optical layer.ToolBody, establishes xyz coordinate system, and nx is the refractive index of uniaxial anisotropic optical layer 211 in the direction x, ny be uniaxial respectively toFor anisotropic optical layer 211 in the refractive index in the direction y, nz is refractive index of the uniaxial anisotropic optical layer 211 in the direction z, the direction z(enter light perpendicular to uniaxial anisotropic optical layer 211 for the extending direction of the film thickness of uniaxial anisotropic optical layer 211Face), nx=ny (no1)>nz(ne1).In one embodiment, the very optical index of uniaxial anisotropic optical layer 211ne1For 1.0-2.5, ordinary refraction index no1For 1.0-2.5.In one embodiment, uniaxial anisotropic optical layer 211Material includes but is not limited to smectic material.
Wherein, isotropism optical layer 212 has optical isotropy, and the refractive index of all directions is identical.Implement at oneIn example, the refractive index ns of isotropism optical layer 2522For 1.0-2.5.In one embodiment, isotropism optical layer 252Material is isotropic refraction materials, can be the organic transparent material or inorganic that plat structure coating is done on photoresistTransparent material.
Specifically, the refractive index ns of isotropism optical layer 2122It is ordinary less than uniaxial anisotropic optical layer 211Optical index no1.Specifically, the ordinary refraction index no of uniaxial anisotropic optical layer 2111With isotropism optical layer 212Refractive index ns2Difference be 0.01-2.Work as no1And ns2Difference it is bigger, the easier light energy that will face is assigned to big visual angle.OneIn a embodiment, the ordinary refraction index no of uniaxial anisotropic optical layer 2111For the refractive index in the direction 0/180degree,The very optical index ne of uniaxial anisotropic optical layer 2111To enter light perpendicular to uniaxial anisotropic optical layer 211The refractive index in face.In one embodiment, the ordinary refraction index no of uniaxial anisotropic optical layer 2111It is 90/The refractive index in the direction 270degree, the very optical index ne of uniaxial anisotropic optical layer 2111For perpendicular to uniaxialThe refractive index of the incidence surface of anisotropic optical layer 211.Wherein, the direction 0/180degree and the direction 90/270degree are constitutedFace be parallel to the incidence surface of uniaxial anisotropic optical layer 211.
In embodiments of the present invention, multiple grooves are formed on the side of uniaxial anisotropic optical layer 211, respectively to sameProperty optical layer 212 include that plate-like portion 2121 and multiple and groove shapes, the size that are fitted on 2121 side of plate-like portion matchBulge-structure 2122, and on the arragement direction of multiple bulge-structures 2122, the width of bulge-structure 2122 is in incident lightIn wave-length coverage.Specifically, the width of bulge-structure 2122 is less than or equal to 1000nm.More specifically, bulge-structure 2122Width is greater than or equal to 300nm, and is less than or equal to 1000nm.Due to the refractive index ns of isotropism optical layer 2122Less than listThe ordinary refraction index no of optical axis anisotropic optical layer 2111, therefore the incidence surface formation of bulge-structure 2122 is close to light by lightThin grating interface generates diffraction phenomenon in grating interface polarised light, and (referring to Fig. 3) it is big to form positive visual angle light type energy distributionThe optical phenomena at visual angle.Specifically, bulge-structure is in periodic arrangement, i.e., by the diffraction portion of bulge-structure building in periodically rowColumn.
In one embodiment, referring to fig. 4, bulge-structure 2122 is tetragonous rod structure, and tetragonous rod structure has multiple sidesFace, and the one side fitting plate-like portion 2121 of tetragonous rod structure extends, the extending direction of multiple bulge-structures 2122 is parallel, adjacentTwo bulge-structures 2122 be spaced setting.Specifically, please also refer to Fig. 5, the width for being bonded the side of plate-like portion 2121 is2rx1, the distance between the center of side of adjacent two bulge-structures 2122 fitting plate-like portion 2121 is Px1, Px1≥2rx1, work as Px1=2rx1When, two adjacent bulge-structures are bonded setting.Bulge-structure 2122 with a thickness of d1, isotropismOptical layer 212 with a thickness of D1, d1It is not 0, and D1≥d1.Wherein, 2rx1In the wave-length coverage of incident light, 2rx1It is less than or waitsIn 1000nm, more specifically, 2r x1More than or equal to 300nm, and it is less than or equal to 1000nm.
In one embodiment, referring to Fig. 6, bulge-structure 2122 is tetragonous wimble structure, and multiple bulge-structures 2122 are in twoMatrix array arrangement is tieed up, two adjacent bulge-structures 2122 are spaced setting, to be more effectively assigned to positive visual angle light energyTwo-dimensional directional, so that full view is ornamental evener.Specifically, please also refer to Fig. 7, in the x direction, fitting plate-like portion 2121The width of side is 2rx2, the distance between the center of side of adjacent two bulge-structures 2122 fitting plate-like portion 2121 isPx2, Px2≥2rx2, work as Px2=2rx2When, two adjacent bulge-structures are bonded setting in the x direction.In y-direction, it is bondedThe width of the side of plate-like portion 2121 is Ly2, the center of the side of adjacent two bulge-structures 2122 fitting plate-like portion 2121The distance between be Py2, Py2≥2ry2, work as Py2=2ry2When, two adjacent bulge-structures are bonded setting in y-direction.It is convexRise structure 2122 with a thickness of d2, isotropism optical layer 212 with a thickness of D2, d2It is not 0, and D2≥d2.Wherein, 2rx2With2ry2In the wave-length coverage of incident light, specifically, 2rx2And 2ry2Respectively less than or it is equal to 1000nm, more specifically, 2rx2With2ry2It is all larger than or is equal to 300nm, and is less than or equal to 1000nm.In one embodiment, quadrangular is square prism, 2rx2=2ry2。
In embodiments of the present invention, the first grating layer 213 is layered in isotropism optical layer 212 far from uniaxial respectively to differentOn the side of property optical layer 211；Or it is embedded in one of isotropism optical layer 212 far from uniaxial anisotropic optical layer 211On side.Natural light can be become polarised light by the first grating layer 213.Wherein, the thickness of the first grating layer 213 is generally less than 20 μm。
Specifically, when the first grating layer 213 is layered in isotropism optical layer 212 far from uniaxial anisotropic optical layerWhen on 211 side, referring to Fig. 8, the first grating layer includes transparent substrate 2131 and is formed in multiple on transparent substrate 2131The metal layer 2132 of bar shaped, multiple metal layers 2132 are spaced and are arranged in parallel.Transparent substrate 2131 includes but is not limited to glass basePlate, silica gel substrate, silicon dioxide substrate, silicon nitride board, polymethyl methacrylate base plate and polyethylene terephthalateOne of substrate.Metal layer 2132 includes but is not limited to gold, aluminium and copper.Metal layer 2132 is formed on transparent substrate 2131,Multiple metal layers 2132 are spaced along a straight line and uniformly arrange, and the extending direction of multiple metal layers 2132 is parallel to each other, and shapeAt grating.Further, the width of metal layer 2132 is 50nm-150nm；Metal layer 2132 with a thickness of 100nm-200nm；PhaseThe spacing of two adjacent metal layers 2132 is 100nm-200nm.
Specifically, when the first grating layer 213 is embedded in isotropism optical layer 212 far from uniaxial anisotropic optical layerWhen on 211 side, the first grating layer includes the metal layer for the multiple bar shapeds being formed on 212 side of isotropism optical layer,Multiple metal interlevels every and be arranged in parallel.Metal layer includes but is not limited to gold, aluminium and copper.Metal layer is formed in isotropism opticsOn 212 side of layer, multiple metal layers are spaced along a straight line and uniformly arrange, and the extending direction of multiple metal layers is parallel to each other,And form grating.Further, the width of metal layer is 50nm-150nm；Metal layer 2132 with a thickness of 100nm-200nm；PhaseThe spacing of two adjacent metal layers 2132 is 100nm-200nm.
In embodiments of the present invention, the first grating layer 213 divides the electricity vertical with the extending direction of metal layer for direction of vibrationMagnetic wave and the direction of vibration electromagnetic wave parallel with the extending direction of metal layer, the first grating layer 213 can absorb or reflect electromagnetismThe wave oscillating component electromagnetic wave component parallel with metal layer extending direction, only electromagnetic wave vibration component and metal layer extending directionVertical electromagnetic wave component penetrates, and obtains effect identical with polarizer, only passes through the polarization perpendicular to polarizer draw directionLight.
Specifically, light is by horizontal polarization (the electric field oscillation direction direction 0/180degree) and vertical polarization (electric field oscillation sideTo the direction 90/270degree) it constitutes, the first grating layer 213 has the effect absorbed with penetrating for polarised light.
When the arragement direction of the metal layer of the first grating layer 213 is parallel to the direction 0/180degree, the first grating layerThe extending direction of 213 metal layer is parallel to the direction 90/270degree.Predicted level polarised light can pass through the first grating layer213, the equivalent refractive index which passes through uniaxial anisotropic optical layer 211 is no1, which passes throughThe equivalent refractive index of isotropism optical layer 212 is ns2, due to no1> ns2, uniaxial anisotropic optical layer 211 and it is each toThe interface of same sex optical layer 212 is it is seen that light is generated the effect of diffraction by optically denser medium directive optically thinner medium, light as a result,The optical phenomena that film layer makes positive visual angle light type energy distribute big visual angle is learned, visual angle colour cast is improved.
When the arragement direction of the metal layer of the first grating layer 213 is parallel to the direction 90/270degree, the first grating layerThe extending direction of 213 metal layer is parallel to the direction 0/180degree.It is expected that orthogonal polarized light can pass through the first grating layer213, the equivalent refractive index which passes through uniaxial anisotropic optical layer 211 is no1, which passes throughThe equivalent refractive index of isotropism optical layer 212 is ns2, due to no1> ns2, uniaxial anisotropic optical layer 211 and it is each toThe interface of same sex optical layer 212 is it is seen that orthogonal polarized light is generated the work of diffraction by optically denser medium directive optically thinner mediumWith making positive visual angle light type energy distribute the optical phenomena at big visual angle.
Optical film layer provided in this embodiment, including uniaxial anisotropic optical layer 211, isotropism optical layer 212And first grating layer 213, the ordinary refraction index of uniaxial anisotropic optical layer 211 are greater than isotropism optical layer 212Refractive index, light will generate diffraction when passing through from the interface of groove and bulge-structure, so that positive visual angle light type energy distributionBig visual angle improves visual angle colour cast；First grating layer 213 is layered in isotropism optical layer 212 far from uniaxial anisotropic lightOn the side for learning layer 211, or it is embedded on side of the isotropism optical layer 212 far from uniaxial anisotropic optical layer 211,Natural light can be made to become polarised light, and the polarizer that alternate thicknesses are thicker.Above-mentioned optical film layer can be by positive visual angle light as a result,Type energy distributes big visual angle, improves visual angle colour cast, but also natural light can be become polarised light, to replace polarizer.
It is the structural schematic diagram of the display device in the present embodiment referring to Fig. 9, Fig. 9.
In this example it is shown that device 10 includes backlight module 100 and display panel 200.Wherein, backlight module 100Offer collimates out light back light (collimate light emitting BL), so as to concentrate on positive visual angle defeated for the energy of lightOut.
In embodiments of the present invention, referring to Figure 10, the backlight light type output that backlight module 100 has directive property high, includingReflector plate 110, light guide plate 120, prism film 130 and LED light source 140, reflector plate 110 and light guide plate 120, prism film 130 are successivelyStacking, light guide plate 120 have incidence surface 121, and LED light source 140 is oppositely arranged with incidence surface 121, and light guide plate 120 is close to reflector plate110 side offers the first groove 122 of bar shaped, and the section of the first groove 122 is V-shaped, the extending direction of the first groove 122Vertical with the light direction of LED light source 140, light guide plate 120 offers the second groove of bar shaped close to the side of prism film 130123, the section of the second groove 123 is V-shaped, and the extending direction of the second groove 123 is parallel with the light direction of LED light source 140.IntoOne step, the prism side of prism film 130 is layered on light guide plate 120.
In embodiments of the present invention, referring to Figure 11 and Figure 12, Figure 11 and Figure 12 are the knot of the display panel in the present embodimentStructure schematic diagram.
In the present embodiment, display panel 200 includes optical film layer 210, first substrate 220, display layer 230, the second gratingLayer 240, photoresist layer 250 and the second substrate 260.
Specifically, side of the optical film layer 210 far from uniaxial anisotropic optical layer 211 is arranged in first substrate 220On；The second substrate 260 is oppositely arranged with first substrate 220；The setting of display layer 230 first substrate 220 and the second substrate 260 itBetween；Second grating layer 240 is arranged between display layer 230 and the second substrate 260；Photoresist layer 250 is arranged in the second grating layerBetween 240 and the second substrate 260, or it is arranged between first substrate 220 and display layer 230.
That is, in one embodiment, referring to Figure 11, display panel 200 includes the successively optical film layer 210 of lamination setting, theOne substrate 220, display layer 230, the second grating layer 240, photoresist layer 250 and the second substrate 260；In another embodiment,Referring to Figure 12, display panel 200 includes the optical film layer 210, first substrate 220 of successively lamination setting, photoresist layer 250, displayThe 230, second grating layer 240 of layer and the second substrate 260.
In the embodiment of the present invention, optical film layer 210 is referring to the associated description of a upper embodiment, and details are not described herein.OpticsFilm layer 210 can distribute positive visual angle light type energy to big visual angle, improve visual angle colour cast, but also can become to polarize by natural lightLight, to replace polarizer, the thickness of thinning display panel.
In the embodiment of the present invention, first substrate 220 is arranged in optical film layer 210 far from uniaxial anisotropic optical layerOn 211 sides, the second substrate 260 is oppositely arranged with first substrate 220, and the material of first substrate 220 and the second substrate 260 is not doneLimitation, can specifically select glass substrate.Display layer 230 includes liquid crystal material layer and is arranged in liquid crystal material layer upper and lower surfaceElectrode layer, wherein the material of electrode layer is preferably tin indium oxide.
In the embodiment of the present invention, the second grating layer 240 includes the multiple bar shapeds of transparent substrate and formation on the transparent substrateMetal layer, multiple metal interlevels every and be arranged in parallel.Transparent substrate includes but is not limited to glass substrate, silica gel substrate, dioxyOne of SiClx substrate, silicon nitride board, polymethyl methacrylate base plate and polyethylene terephthalate substrate.MetalLayer includes but is not limited to gold, aluminium and copper.Metal layer is formed on the transparent substrate, and multiple metal layers are spaced along a straight line and uniformly arrangeCloth, and the extending direction of multiple metal layers is parallel to each other, and form grating.Further, the width of metal layer is 50nm-150nm；Metal layer with a thickness of 100nm-200nm；The spacing of two adjacent metal layers is 100nm-200nm.Further,First grating layer 213 of the second grating layer 240 and optical film layer 210 is oppositely arranged, i.e. multiple metal layers of the second grating layer 240It is corresponding with multiple metal layers of the first grating layer 213.The structure and function phase of second grating layer 240 and the first grating layer 213Seemingly, has the effect absorbed with penetrating for polarised light.
In the embodiment of the present invention, photoresist layer 250 is used to provide form and aspect for display panel, and display panel is made to form colored showShow picture.Photoresist layer 250 can be set between the second grating layer 240 and the second substrate 260, or also can be set firstBetween substrate 220 and display layer 230.
Please also refer to Figure 13-Figure 15 (clathrum is compensation film layer in figure), in one embodiment, when photoresist layer 250When being arranged between the second grating layer 240 and the second substrate 260, display panel can also include: setting in display layer 230 and theCompensation film layer between two grating layers 240；And/or the compensation film layer between display layer 230 and first substrate 220 is set.
Please also refer to Figure 16-Figure 18 (clathrum is compensation film layer in figure), in one embodiment, when photoresist layer 250When being arranged between first substrate 220 and display layer 230, display panel can also include: to be arranged in display layer 230 and the second lightCompensation film layer between grid layer 240；And/or the compensation film layer between photoresist layer 250 and first substrate 220 is set.
It should be noted that display panel 200 is not limited to above-mentioned stepped construction, different layers can increase according to different demandsThe material of specific function for example, increasing other function material in single function film layer, and obtains multi-functional film layer.In addition, displayThe lamination order of each film layer can be changed according to required function in panel 200, at the same time it can also add as neededEnter other function film layer etc..
Display device 10 provided in this embodiment, the backlight module 100 including the high backlight light type output of directive property, andWith big visual angle and display panel 200 that colour cast is improved, is thinned.Wherein, 200 one side of display panel passes through optical filmThe setting of layer 210, can be assigned to big visual angle for the light type energy at positive visual angle, solve the problems, such as the big visual angle colour cast of display panel 200,Without dividing each sub-pixel for main pixel and sub-pixel structure, redesign metal routing or thin film transistor (TFT) are avoidedElement drives sub-pixel and light-permeable open region sacrifice, to have the high saturating rate of panel, increases out light energy, can be withReach energy-efficient benefit, while maintaining the display resolution and driving frequency of display panel 200；On the other hand, the first gratingLayer 213 and the second grating layer 240 can make natural light become polarised light, and the polarizer that alternate thicknesses are thicker, and make to showThe thinner thickness of panel 200, so that 10 volume of display device is frivolous, display colour cast rate is low and has high display efficiency, it canImprove the Experience Degree of user.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned realityIt applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not depositedIn contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneouslyIt cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the artIt says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the inventionRange.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.